Blood purifier

The utility model provides a blood purifier includes the adsorption column and the end -blocking device of sealed adsorption column axial both ends mouth respectively, and the end -blocking device includes end cover and filter screen, wherein, is provided with a stationary hump on the inner peripheral surface of the port of adsorption column, be provided with on the outer peripheral face of filter screen with the first fixed recess of a stationary hump coupling, be provided with the 2nd stationary hump on the inner peripheral surface of filter screen, be provided with on the outer peripheral face of the port of end cover with the fixed recess of the second of the 2nd stationary hump coupling. Through the cooperation between arch and the recess, make the relative displacement that can not take place the circumferencial direction between adsorption column, filter screen, the end cover, avoided relative movement and the sealing washer that produces warp, guarantees blood purifier's sealed effect, avoids producin